I was watching an interesting programme on TV the other week about old age and
changes to the body or otherwise.
One thing it said is that we assume old people think slower and speak slower etc
because of deteriation of brain function, but the TV programme was saying there
is no evidence of this at all (unless you happen to have dementia which is a disease
of the brain ) and that the new thinking is that you simply have so much knowledge
and life experience, that it takes longer for the brain to sift through all of that
information and find the right answer or experience etc.
It did say that it has been proven that in old age, the left side of the brain and the
right side of the brain forms more connections to link them up, that possibly this was
a way of compensating for any slowing down of thinking and to allow messages and
electrical impulses to better travel around the brain to access all that stored information.
They also showed experiments where old people (people in their 80s 90s) were
given new experiences and things to learn etc and the programme demonstrated that
the brain never loses its ability to learn new things and take in new information. But at the
same time old information from long ago was still stored in the brain waiting to be
remembered.
At one point they did an experiment where a group of elderly people were invited to
smell different scents from their childhood, old fashioned scents which we may not have any more.
They were asked to smell each scent and say what it reminded them of.
One man was reminded of his time in the army polishing boots as a punishment. Another lady
was reminded of wash day trying to get the family washing for the week completed etc.
There was one fabulousness lady who took up sky diving in her 80s. Another woman in her 80s
took up modelling. A man in his early 90s went to the gym every week to do weight training.
The programme was saying that far from declining there was a lot of evidence that with exercise
the human could continue to build muscle and replace bone as long as we live if we continue to
be active. That after the age of 50 the typical person loses 2% bone mass every year but
this need not be the case with regular exercise which increases bone density quicker than it
is lost.
There was a man who was in his 80s and was a professional poker player as sharp as any of the
younger players. He was very successful and it was said that as we age, people get better at hiding
their emotions - no one could read his face and that is why it was thought he was so good.
Apparently we get less colds as we get older as we gradually become immune to all
the varieties of cold virus.
Totally brilliant programme, very inspiring.
See full description here.
Secrets of Growing Old Episode 1